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rosijanka [135]
3 years ago
7

A rectangle has a length of x + 9 and a width of x - 1. Which equation below

Mathematics
1 answer:
jolli1 [7]3 years ago
6 0

Answer:

A

Step-by-step explanation:

P = 2 (W+L)

P = 2 (x+9+x-1)

P = 2 (2x+8)

P = 4x+16

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Oliga [24]

Answer:

This might help:

3 0
2 years ago
4. What are the values of x and y? HELP PLEASE
Sergeeva-Olga [200]
The bottom answer is correct. I had some trouble with this so I had to find x and y in separate parts.

TO FIND X
notice that the top triangle and bottom triangles are similar, meaning if you multiple all three sides of one by a specific number, it becomes the same size as the bottom triangle.

17 x n = 8, therefore n=8/17
8 x n = X, therefore X=64/17

For some reason, this does not give a correct value for Y, so I had to use trig 

TO FIND Y 

Notice that the angle DAB is the same as DBC (lets call this angle Ø)

Using trig rule, we know that the cos of an angle is equal to the adjacent side divided by the hypotenuses.

We can now form some equations:

cosØ = 15/17 (from the top triangle)
cosØ = 8/Y      (from bottom triangle)
Now we know that Y=(8x17)/15 = 136/15

X=64/15  Y=136/15
8 0
2 years ago
5 1 - 2 5 4 7= please help asap
Yuki888 [10]

Answer:

-2496

Step-by-step explanation:

6 0
3 years ago
6x1 + 9 x 1/10 + 8 x 1/100 + 3 x 1/1000=?
Stolb23 [73]

Answer:

6983/1000 OR 6.983

Step-by-step explanation:

6*1=6

9*1/10=9/10

8*1/100=8/100

3*1/1000=3/1000

6+9/10+8/100+3/1000=6983/1000

OR

6.983

6 0
2 years ago
A tiger ate food that weighed 15% of its body weight. If it ate 75lb., how much does the tiger weigh?
Andru [333]
11.25 lbs, if I calculated this correctly.
6 0
3 years ago
Read 2 more answers
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